he increase from 125cm to 135cm
first step :

second step :
percents he change is

Answer:
-5
Step-by-step explanation:
7−12
=7−12
=7+−12
=−5
Answer:
I'm confused by the layout of the first two, but I can help you with the last one!
The last one is C!
Step-by-step explanation:
Answer:
The answer is 81.
Step-by-step explanation:
Since the power of 4 is even, the result will be positive.

Simplify.

<u>hence</u><u>,</u><u> </u><u>the</u><u> </u><u>answer</u><u> </u><u>is</u><u> </u><u>Option</u><u> </u><u>A</u><u>)</u><u> </u><u>81</u><u>.</u>
Answer:
Well you can try to use a calculator, like the one on google. I can try to help if you really need it.
Step-by-step explanation: